Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
trinh cua » tinh cua, trinh luat, trinh quan
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, thanh cac

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc thieu xanh - hanh trinh cua ((nhung cong) OR (thong cong)) tan ((than cau) or (than cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh cua ((nhung cong) OR (thong cong)) tan ((than cau) OR (than cap)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh cua ((nhung cong) OR (thong cong)) tan ((than cau) or (than cap))".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh cua ((nhung cong) OR (thong cong)) tan ((than cau) or (than cap))*.